Saw-setting device



Jan. 1,1924 1,479,318

H. PISTEMAA SAW SETTING DEVI GE Filed m1, s. 1925 '-f/'iz d I. i A7. 4 j Z l 1.. 7

J- fz Patented Jan. 1, 1924.

UNITED Tras HENRY rIsrEMAA, or roULsBo, WAsHrNGroN.

Y SAW-SETTING Dnvrcn.

Application'iled February 9, 1923. Serial No. 618,063.

T 0 (LIZ/whom t may concern:

Be it known that HENRY PISTEMAA, a citizen of Finland, residing at Poulsbo, in the Vcounty of Kitsap and Stategof Washington,has invented certain new and. useful Improvements in Saw-,Setting Devices, of which the following is a specification.

This invention relates to an improvement in saw gauges, wherein the depth of thev raker and cutting teeth may be accurately and correctly gauged.

The invention comprehends a single portV able device whichV may be readily applied to the saw and adjusted to indicate the relative heights of the cutting teeth, so that these teeth may be properly filed to insure their uniformity, the device also including means by which the raker teeth may be subsequently gauged with respect to their proper heights and adjusted accordingly.

The invention is illustrated in the accompanying drawings, in which: j

Fig. 1 Vis a view in elevation of the improved device, showing the same applied to a saw, the final position of the device in gauging relation to the saw being indicated in dotted lines.

Fig. 2 is a plan view of Fig. 1.

Fig. 3 is a section on line 3 3 of Fig. 1.

The improved device comprises what may be termed a gauge plate 1 preferably of more or less resilient spring steel and presenting a plain straight under surface 2. Guide posts 3 are threaded in the gauge plate 1 and extend below the same to bear against the side of the saw in the use of the device, as will later appear. A flexible bow member 4 is arranged above the gauge plate 1, the terminals of which are secured upon the posts 3 by nuts 5. The bow member at its central portion is connected Vwith the gauge plate by a bolt 6 securedagainst upward movement relative to the gauge plate and passing through the bow and threaded beyond the same to receive an adjusting wing nut 7. Set screwsS and 9 are threaded through the gauge plate adjacent its central portion, these screws being arranged on opposite Vsides of the longitudinal median line as shown in Fig. 2, and each set screw having a non-circular head 10 for the application of a wrench or other turning implement.

In the use of the device, the gauge plate 1 in its normal straight position is placed upon the teeth 11 of the saw l2, the posts 3 bearing against the side Vof the sawias a guide. The wing nut 7 is turned until the central portion of the ygauge plate is bowed to a degree to cause the curvature ofsuch plate to conform to the curvature Yof the teeth of the saw. The operator is thus provided with va uniform curvature-edge with which the cutting edges of thev teeth must coincide in order'that lsuch teethmay befof uniform cutting depth. By glancing along the lower surface of the gauge plate, any projecting or deficient longtooth may bei readily determined, and if too, long, ,led away to reduce itsjlength andvif too short, the remaining teeth may be adjusted ac-V cordingly. vThere will thus be provided a means by which the absolutely uniform cutting depth of the cutting teeth may be readily gauged and made uniform, as will beV apparent. In connection with the raker teeth, which are of course somewhat shorter than the cutting teeth, one or the other of the bolts 8 or 9 is ladjustedl tothe proper projection below the gauge plate to deter-A mine the proper depth of the raker teeth. As the curvatureV of the saw is uniform, the raker tooth Vgauge thus provided may be readily brought into cooperation with the successive raker teeth and the latter adjusted by bending or reforming to a properV depth as indicated by such gauge.

|Ihe two gauging screws 8 and 9 are pro` vided, one to beused with theraker teeth of a fallingA saw, and the other to be used with Y the raker teeth of a bucking saw, for which reason these adjusting screws are relatively 0E set as shown.

It is apparent from they above that the implement provides for the convenient gaug-y ing of the depth of the cutter and raker teeth, and vthat particularly in connectionV with the cutting teeth the plain surface of the gauging plate resting upon the extreme ends of these Ateeth provides for a clear vision of the operator in the plane between that surface and any shorterV tooth, thus clearly indicating even to a microscopic degree, the failure of a particular tooth or teeth to touch the surface of a gauge plate.

Claims: A j Y 1. A saw gauge, comprising a flexible gauging'plate, means for flexing said plate to conform to the curvature of the saw, and means carried by said plate for gauging cooperaAtion with certain teeth.

saw gauge, comprising a exible gauging plate, a bow member arranged above the plate and having its ends rigidly secured thereto, and a bolt extendingfrom the plateand through the bow, and means on said bolt to cause the plate and bow to approach each other to provide a curvature in the plate to conform to the curvature of the saw.

3. A saw gauge, comprising a flexible gauging plate having; a lower gauging surface, means for flexing said plate to conform to the curvature ofthe saw, and gauge screws adjustable in said plate to project below the gauging surface thereof.

4. A saw gauge, comprising a flexible gauging platehaving a lower gauging surface, means for flexing said plate to conform to the curvature orp the saw, and gauge screws adjustable in said plate to project below the gauging surface thereof, said gauge screws being on opposite sides of the longitudinal median line of the plate.

5. A saw gauge, comprising a flexible gauginofjplate, means fo-rilexing said plate to conform to the curvature of the saw, means carried Vby said plate for gauging cooperation with certain teeth, and posts depending from the plate to bear against the side of the sawV blade inpositioningy the plate relatively .to the saw blade.

In testimony whereof I ailx my signature in the vpresence of two witnesses.

HENRY PISTEMAA.

Witnesses:

WM; KIPPO, C. BYRON. 

